1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2007 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
32 #include <linux/types.h>
33 #include <linux/pci.h>
34 #include <linux/netdevice.h>
36 #include "ixgbe_type.h"
37 #include "ixgbe_common.h"
40 #define IXGBE_ERR(args...) printk(KERN_ERR "ixgbe: " args)
43 #define DPRINTK(nlevel, klevel, fmt, args...) \
44 ((void)((NETIF_MSG_##nlevel & adapter->msg_enable) && \
45 printk(KERN_##klevel PFX "%s: %s: " fmt, adapter->netdev->name, \
46 __FUNCTION__ , ## args)))
48 /* TX/RX descriptor defines */
49 #define IXGBE_DEFAULT_TXD 1024
50 #define IXGBE_MAX_TXD 4096
51 #define IXGBE_MIN_TXD 64
53 #define IXGBE_DEFAULT_RXD 1024
54 #define IXGBE_MAX_RXD 4096
55 #define IXGBE_MIN_RXD 64
57 #define IXGBE_DEFAULT_RXQ 1
58 #define IXGBE_MAX_RXQ 1
59 #define IXGBE_MIN_RXQ 1
61 #define IXGBE_DEFAULT_ITR_RX_USECS 125 /* 8k irqs/sec */
62 #define IXGBE_DEFAULT_ITR_TX_USECS 250 /* 4k irqs/sec */
63 #define IXGBE_MIN_ITR_USECS 100 /* 500k irqs/sec */
64 #define IXGBE_MAX_ITR_USECS 10000 /* 100 irqs/sec */
67 #define IXGBE_DEFAULT_FCRTL 0x10000
68 #define IXGBE_MIN_FCRTL 0
69 #define IXGBE_MAX_FCRTL 0x7FF80
70 #define IXGBE_DEFAULT_FCRTH 0x20000
71 #define IXGBE_MIN_FCRTH 0
72 #define IXGBE_MAX_FCRTH 0x7FFF0
73 #define IXGBE_DEFAULT_FCPAUSE 0x6800 /* may be too long */
74 #define IXGBE_MIN_FCPAUSE 0
75 #define IXGBE_MAX_FCPAUSE 0xFFFF
77 /* Supported Rx Buffer Sizes */
78 #define IXGBE_RXBUFFER_64 64 /* Used for packet split */
79 #define IXGBE_RXBUFFER_128 128 /* Used for packet split */
80 #define IXGBE_RXBUFFER_256 256 /* Used for packet split */
81 #define IXGBE_RXBUFFER_2048 2048
83 #define IXGBE_RX_HDR_SIZE IXGBE_RXBUFFER_256
85 #define MAXIMUM_ETHERNET_VLAN_SIZE (ETH_FRAME_LEN + ETH_FCS_LEN + VLAN_HLEN)
87 /* How many Tx Descriptors do we need to call netif_wake_queue? */
88 #define IXGBE_TX_QUEUE_WAKE 16
90 /* How many Rx Buffers do we bundle into one write to the hardware ? */
91 #define IXGBE_RX_BUFFER_WRITE 16 /* Must be power of 2 */
93 #define IXGBE_TX_FLAGS_CSUM (u32)(1)
94 #define IXGBE_TX_FLAGS_VLAN (u32)(1 << 1)
95 #define IXGBE_TX_FLAGS_TSO (u32)(1 << 2)
96 #define IXGBE_TX_FLAGS_IPV4 (u32)(1 << 3)
97 #define IXGBE_TX_FLAGS_VLAN_MASK 0xffff0000
98 #define IXGBE_TX_FLAGS_VLAN_SHIFT 16
100 /* wrapper around a pointer to a socket buffer,
101 * so a DMA handle can be stored along with the buffer */
102 struct ixgbe_tx_buffer {
105 unsigned long time_stamp;
110 struct ixgbe_rx_buffer {
117 struct ixgbe_queue_stats {
123 struct ixgbe_adapter *adapter; /* backlink */
124 void *desc; /* descriptor ring memory */
125 dma_addr_t dma; /* phys. address of descriptor ring */
126 unsigned int size; /* length in bytes */
127 unsigned int count; /* amount of descriptors */
128 unsigned int next_to_use;
129 unsigned int next_to_clean;
132 struct ixgbe_tx_buffer *tx_buffer_info;
133 struct ixgbe_rx_buffer *rx_buffer_info;
139 /* To protect race between sender and clean_tx_irq */
142 struct ixgbe_queue_stats stats;
147 char name[IFNAMSIZ + 5];
148 u16 work_limit; /* max work per interrupt */
151 /* Helper macros to switch between ints/sec and what the register uses.
152 * And yes, it's the same math going both ways.
154 #define EITR_INTS_PER_SEC_TO_REG(_eitr) \
155 ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 0)
156 #define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG
158 #define IXGBE_DESC_UNUSED(R) \
159 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
160 (R)->next_to_clean - (R)->next_to_use - 1)
162 #define IXGBE_RX_DESC_ADV(R, i) \
163 (&(((union ixgbe_adv_rx_desc *)((R).desc))[i]))
164 #define IXGBE_TX_DESC_ADV(R, i) \
165 (&(((union ixgbe_adv_tx_desc *)((R).desc))[i]))
166 #define IXGBE_TX_CTXTDESC_ADV(R, i) \
167 (&(((struct ixgbe_adv_tx_context_desc *)((R).desc))[i]))
169 #define IXGBE_MAX_JUMBO_FRAME_SIZE 16128
171 /* board specific private data structure */
172 struct ixgbe_adapter {
173 struct timer_list watchdog_timer;
174 struct vlan_group *vlgrp;
178 struct work_struct reset_task;
181 struct ixgbe_ring *tx_ring; /* One per active queue */
182 struct napi_struct napi;
187 u32 tx_timeout_count;
191 struct ixgbe_ring *rx_ring; /* One per active queue */
193 u64 hw_csum_rx_error;
198 struct msix_entry *msix_entries;
201 u32 alloc_rx_page_failed;
202 u32 alloc_rx_buff_failed;
205 #define IXGBE_FLAG_RX_CSUM_ENABLED (u32)(1)
206 #define IXGBE_FLAG_MSI_ENABLED (u32)(1 << 1)
207 #define IXGBE_FLAG_MSIX_ENABLED (u32)(1 << 2)
208 #define IXGBE_FLAG_RX_PS_ENABLED (u32)(1 << 3)
209 #define IXGBE_FLAG_IN_NETPOLL (u32)(1 << 4)
211 /* Interrupt Throttle Rate */
215 /* OS defined structs */
216 struct net_device *netdev;
217 struct pci_dev *pdev;
218 struct net_device_stats net_stats;
220 /* structs defined in ixgbe_hw.h */
223 struct ixgbe_hw_stats stats;
224 char lsc_name[IFNAMSIZ + 5];
242 extern struct ixgbe_info ixgbe_82598AF_info;
243 extern struct ixgbe_info ixgbe_82598EB_info;
244 extern struct ixgbe_info ixgbe_82598AT_info;
246 extern char ixgbe_driver_name[];
247 extern char ixgbe_driver_version[];
249 extern int ixgbe_up(struct ixgbe_adapter *adapter);
250 extern void ixgbe_down(struct ixgbe_adapter *adapter);
251 extern void ixgbe_reset(struct ixgbe_adapter *adapter);
252 extern void ixgbe_update_stats(struct ixgbe_adapter *adapter);
253 extern void ixgbe_set_ethtool_ops(struct net_device *netdev);
254 extern int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter,
255 struct ixgbe_ring *rxdr);
256 extern int ixgbe_setup_tx_resources(struct ixgbe_adapter *adapter,
257 struct ixgbe_ring *txdr);
259 #endif /* _IXGBE_H_ */